Production of varicolored effects



Sept. 2, W39. R. E; BATEMAN 1,774,694

' PRODUCTION OF VARICOLORED EFFECTS Originl Filed Api'il 27, 1927 5230 z if.

'A TTORNEY.

Patented Sept. 1930 UNITED, STATES nan-n a. mum, or person, mamas! rnonucrron or vaarcononnn armors Application filed April 27, 1927, Serial No. 188,923. Renewed January 11, 1989.

The present invention relates to the production of varicolored effects in coating surfaces and to apparatus therefor.

Among the objects of the invention is to enable an operator to readily produce a color change either abruptly or gradually when applying'liquid coloring material to a surace.

Other ob'ects will readily appear to those skilled in t e art upon reference to the following description and accompanying drawing in which Fig. 1 is a longitudinal vertical section through a spray gun suitable for the coating operation;

' Fig. 2 is a longitudinal section on line 2-2 of Fig. 1; and

Fig. 3 is a section on line 3-3 of Fig. 1.

As indicated in the drawings, the opera- 90 tion is best carried out with a novel spray gun such as shown. In this form of p the body portion 10 provided with a istol grip portion 11 is also provided with a ongitudinal air passage 12 connected by hose 13 The air passage 12 is controlled by. a needle valve 15 carrying a laterally enlarged portion 16 against which operate a pair of cams 17 and 18: These cams are movable vertically either together or separately b means of a pair of triggers 20 and 21 whic carry pins 22 contacting with the lower slopmg end 23 of cams 17 and 18.

Beyond valve 15 the passage 12 is divided passage 32. This cross-passage 32 is con-' nected at its ends through tubes 33 to the lower portions of two closed liquid color contamers 34 and 35 and is valved on either side 3; passage 31 as by the cut ofi valves 36 and The valves 36 and 37 are to and operated by the two triggers 21 and 20 re-. l0 spectively so that, as either trigger is pulled,

with a source of air under pressure.

and the two branches lead to'opposed jets 25 as desired without having to cease operations and change containers and nozzles.

Having now described the invention and the preferred form of embodiment thereof it is to be noted that the said invention is to be limited not to the s cific details herein'set forth but only by t e scope of the claims which follow. j

I claim T 1. Means for coating comprising a spray nozzle, means'for supplying air under pressure to said nozzle, means for supplying a plurality of coating materials to sa1d nozzle under pressure and a control for each coating material supply, each of said controls alsocontrolling the air supply. x

2. In a spray device a nozzle, an air conduit leading to said nozzle, a pluralitflgf conduits for liquid coating material a leading to saidnozzle, valves in each of said conduits, and control levers, each connected in operating relation to the valve-in the air conduit and to one of the other valvesf 3. In a spra device a nozzle, an air conduit leading to sai nozzle, a plurality of conduits for liquid coating material also leading to said nozzle, valves in each of said conduits, and control levers, each connected in operating relation to the valve in the air conduits and to one of the other valves, together with means for supplying compressed air to said air conduits and means for supplying a separate coating material under pressure to each of the other conduits.

. RALPH E. BATEMAN. 

